Double-sided toothbrush head



FIG. 1 is a top perspective view of a double-sided toothbrush head, showing my new design.

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The broken lines shown in the drawings depict portions of the double-sided toothbrush head that form no part of the claimed design. 

CLAIM The ornamental design for a double-sided toothbrush head, as shown and described. 